4WE10D33/CG220N9K4/V 4WE10D33/CW110N9K4 4WE10D33/CW110N9K4/B10 4WE10D Rexroth electromagnetic directional valve imported with original packaging33/CW110N9K4/B08 4WE10D33/OFCG110N9K4

4WE10D33/CG220N9K4/V 4WE10D33/CW110N9K4 4WE10D33/CW110N9K4/B10 4WE10D Rexroth electromagnetic directional valve imported with original packaging33/CW110N9K4/B08 4WE10D33/OFCG110N9K4

FAQ;

6. What maintenance is required for the 4WE6 Series? Regular maintenance extends the valve’s lifespan and prevents system failures. Key tasks include: • Fluid Quality Checks: Test hydraulic fluid for contamination (ISO 4406 cleanliness code ≤ 18/15) and replace filters every 6–12 months (or per system hours). • Solenoid Inspection: Check wiring connections for corrosion or loose terminals; replace solenoids if they overheat ( > 60°C surface temperature) or fail to actuate. • Leak Detection: Inspect port connections and spool seals quarterly. Replace O-rings/seals (typically nitrile or Viton) if leaks are detected. • Manual Override Test: Activate the manual override (if equipped) monthly to ensure spool mobility (prevents seizing). 7. What are common issues with the 4WE6 Series, and how to troubleshoot them? Below are frequent problems, causes, and solutions: Symptom Possible Cause Troubleshooting Solution Valve fails to actuate (no movement) 1. No power to solenoid
2. Faulty solenoid
3. Spool seized 1. Check wiring/fuse; test voltage with a multimeter
2. Replace solenoid coil
3. Flush valve; replace contaminated fluid Leaks at ports/connections 1. Loose bolts
2. Damaged O-rings/seals
3. Thread misalignment 1. Retorque bolts to specs
2. Replace seals (use OEM parts)
3. Realign ports; replace damaged threads Spool sticks or moves sluggishly 1. Fluid contamination
2. Low fluid viscosity
3. Worn spool 1. Flush system; replace filter
2. Use fluid with correct viscosity (ISO VG 32–46)
3. Replace spool or valve cartridge Solenoid overheats 1. Incorrect voltage (e.g., 12V coil on 24V supply)
2. EMI interference 1. Verify voltage match; replace coil if burned
2. Install EMI filter; use shielded cables 8. Can the 4WE6 Series be used with water-glycol or other non-mineral fluids? Most standard 4WE6 Series valves are designed for mineral oil-based fluids. However, specialized models (with compatible seals and materials) can handle water-glycol (common in mobile equipment) or fire-resistant fluids. • Critical Check: Confirm the valve’s seal material (e.g., Viton or EPDM) is compatible with your fluid—nitrile seals (standard) degrade in water-glycol. • Consult Manufacturer: Always verify fluid compatibility with the supplier before use to avoid seal failure or spool damage.

Guang Zhou PMD Machinery Parts co ltd is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery trade.

Our main products are Excavator Hydraulic Spare Parts, Hydraulic Main Pump, Swing Motor, Travel Motor, Final Drive Ass'y, Swing Device Ass'y, Swing Gearbox, Travel Gearbox, Gears, Regulators, Relief Valve, Fan Motor and other hydraulic items with genuine and aftermarket quality. Until now, our products have been exported to more than 198 countries and regions, spreading all over the Middle East, Southeast Asia, Africa, North America, South America, Europe and Oceania with our own brand "Belparts", which is highly praised by foreign customers and enjoys a high reputation.

In the future, to practice our company culture “DO BETTER FOR TOMORROW ”, we will strive to learn more professional knowledge about machinery parts and increase our procurement and sales experience to provide customers with better products and services! What’s more, we will devote to develop a more broad business space together base on long-term, friendly, mutually beneficial and win-win business relations.